Die for saggars and the like.



No. 878,910. I PATENTBD FEB. 11, 1908.

G. W. THOMAS. v

DIE FOR SAGGARS AND THE LIKE.

APPLICATION FILED sum. 24, 1901.

Inventor: George W. T'hom '3 UNITED STATES PATENT OFFICE.

GEORGE W. THOMAS, OF EAST LIVERPOOL, OHIO, ASSIGNOR TO R. THOMAS AND SONS COMPANY, OF EAST LIVERPOOL, OHIO, A CORPORATION OF OHIO.

DIE FOR SAGGARS AND THE LIKE.

Specification of Letters Patent.

Patented Feb. 11, 1908.

Application filed September 24. 1907. Serial No, 394308.

To all whom it may concern:

Be it known that I, GEORGE W. THOMAS, a citizen of the United States of America, residing in the city of East Liverpool, in the county of Oolumbiana, State of Ohio, have invented certain new and useful Improvements in Dies for Saggars and the Like, of which the following is a specification.

The object of my invention consists primarily in providing means whereby a saggar or the like may be readily removed without breaking from its die and comprises in details the features set forth hereinafter.

In the accompanying drawings in which my invention is illustrated applied to a saggar die, Figure 1 is a side elevation partly broken away; Fig. 2 is a sectional plan of the same on the line 22, Fig. 1, and Fig. 8 is a vertical cross section thereof.

Referring to the drawings, the die proper 5 which is fastened to any suitable support throughthe basal flange 6, consists essen tially of an outer shell 7 and an inner drum 8, between which the saggar (shown in dotted lines in Fig. 3) is molded by the descent of the plunger -9. Considerable difficulty has been experienced in removing the saggar from the die Without breakage and it is to this feature of the device that my invention relates.

Very satisfactory results have been obtained I have found through using a vertic'ally moving plate 10 carrying lifting rods one set of which 11 extend to a lifting ring 12 located normally at the bottom of the space between the drum and the outer shell and a second set 13 extending to the head 14 of the drum. I make this head separate fromand of slightly less diameter than the drum itself and support it upon the wall of the latter through a beveled shoulder, thus forming a scarfed joint so that the u per face of the head is flush with the outer e ge of the wall as illustrated. It will be noted further that the second set of rods 13 which extends to the head 14 are secured to the plate 10 with lost motion and when the die is in position for molding are really suspended from the head of the drum.

To remove a saggar from the die the lifting plate is raised by any suitable means. This actuatesat once the rods 11 carrying the ring 12 and tends to lift the saggar up out of the die. Immediately afterwards the lifting plate encounters the stops 16 on the rods 13 and lifts the head 14 thus supporting the bottom of the saggar, which is then lifted as a whole into the position shown in Fig. 3, whence it may be removed manually or otherwise, supported on the carrying ring 15.

The use of a lifting ring alone has been found inexpedient since the bottom of the saggar is very apt to adhere to the drum head, with the result that it is-broken away from the sides as the latter are pushed up by the ring. By making the drum head separate and also by delaying its rise until the lifting operation has already begun, the saggar bottom is not only supported during its rise but the air has a chance to enter between it and the drum head and thus obviates the danger of breakage.

The arrangement shown and described is practical and serviceable but I do not limit myself to the particular features shown.

I claim as my invention:

1. In combination with a die for saggars and the like, a lifting mechanism for the saggar comprising a lifting ring and an indeand the drum head to lift the saggar from the die.

3. In combination with a die for saggars and the like, a lifting mechanism for the saggar comprising a lifting ring and an independent drum head, and means for actuating the same successively, the ring first, the head afterward, substantially as described.

4. In combination with a die forsaggars and the like, a lifting mechanism for the saggar comprising a lifting ring and an independent drum headin combination with a lifting plate, rods rigidly attached thereto and extending to the lifting ring and a second set of rods attached thereto with lost motion and extending to said drum head, substantially as described.

5. In combination with a die for saggars and the like having stationary outer shell and 5 In testimony whereof I have signed my inner drum, a lifting mechanism for the sagname to this specification, in the presence of gar comprising a lifting ring interposed betwo subscribing Witnesses.

tween said drum and shell, an independent GEORGE W. THOMAS. drum head for the drum, a lifting lever and Witnesses: an operative connection therefrom to said B. D. KENNEY,

' ring and drum head. 1 55H. R. HoLMEs. 

